A DC 20, 25, 30, and fucking 99????
Are you serious?
If the DC is meant to be impossible, then why bother making your players roll? Other than to spit in our fucking faces?
Any DM worth their salt knows that this is just bad all around. If the DC is impossible, then there is no point in making your players roll.
Should have just forced the cutscene showing the futility of it all, instead of wasting your players time like that.
Uninstalled. Negative review left. Fuck BG3, and Fuck Larian.